EP 1103745 A1 20010530 - NON-CONTACT TYPE SHAFT SEALING DEVICE
Title (en)
NON-CONTACT TYPE SHAFT SEALING DEVICE
Title (de)
BERÜHRUNGSLOSE WELLENABDICHTUNG
Title (fr)
DISPOSITIF D'ETANCHEITE D'ARBRE DE TYPE SANS CONTACT
Publication
Application
Priority
JP 9903037 W 19990607
Abstract (en)
A non-contact type shaft sealing device comprising a rotary sealing ring (2) provided on the rotary shaft (1) of equipment to be shaft-sealed and a fixed sealing ring (9) disposed to axially face the rotary sealing ring, wherein the number of air supply holes (9b) formed in the fixed sealing ring (9) is 3 to 24, the hole diameters (d) of throttle mechanisms each provided in each air supply hole (9b) are DIAMETER 0.05 to 3mm and a non-dimensional amount, alpha =8hD/nd<2>, satisfies the relation, 1 ≤ alpha ≤ 200, where h: seal face gap D: shaft diameter, thereby ensuring a stable sealing property and minimizing the consumption of a barrier gas supplied through the air supply holes (9b). <IMAGE>
IPC 1-7
IPC 8 full level
F16J 15/34 (2006.01)
CPC (source: EP KR US)
F16J 15/34 (2013.01 - KR); F16J 15/342 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB LI
DOCDB simple family (publication)
WO 0075540 A1 20001214; DE 69942770 D1 20101028; EP 1103745 A1 20010530; EP 1103745 A4 20051221; EP 1103745 B1 20100915; KR 100413902 B1 20040107; KR 20010106429 A 20011129; US 6505836 B1 20030114
DOCDB simple family (application)
JP 9903037 W 19990607; DE 69942770 T 19990607; EP 99923942 A 19990607; KR 20017001472 A 20010202; US 76255201 A 20010604